patch-2.1.43 linux/include/linux/nametrans.h

• Lines: 70
• Date: Fri Jun 13 13:46:16 1997
• Orig file: v2.1.42/linux/include/linux/nametrans.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.1.42/linux/include/linux/nametrans.h linux/include/linux/nametrans.h
@@ -0,0 +1,69 @@
+#ifndef NAMETRANS_H
+#define NAMETRANS_H
+/*
+ * $Id: nametrans.h,v 1.1 1997/06/04 08:26:57 davem Exp $
+ *
+ * include/linux/nametrans.h - context-dependend filename suffixes.
+ * Copyright (C) 1997, Thomas Schoebel-Theuer,
+ * <schoebel@informatik.uni-stuttgart.de>.
+ */
+
+#include <linux/dalloc.h>
+#include <linux/sysctl.h>
+
+#define MAX_DEFAULT_TRANSLEN 128
+
+/* only filenames matching the following length restrictions can be
+ * translated. I introduced these restrictions because they *greatly*
+ * simplify buffer management (no need to allocate kernel pages and free them).
+ * The maximal total length of a context-dependend filename is the
+ * sum of both constants. */
+#define MAX_TRANS_FILELEN 128 /* max len of a name that could be translated */
+#define MAX_TRANS_SUFFIX   64 /* max len of a #keyword=value# suffix */
+
+/* max number of translations */
+#define MAX_TRANSLATIONS 16
+
+struct translations {
+	int count;
+	struct qstr name[MAX_TRANSLATIONS];
+	struct qstr c_name[MAX_TRANSLATIONS];
+};
+
+/* global/default translations */
+extern char nametrans_txt[MAX_DEFAULT_TRANSLEN];
+
+/* Any changer of a built-in translation must set this flag */
+extern int translations_dirty;
+
+
+/* called once at boot time */
+extern void init_nametrans(void);
+
+/* set global translations */
+extern void nametrans_setup(char * line);
+
+/* return reusable global buffer. needed by VFS. */
+struct translations * get_translations(char * env);
+
+/* if the _first_ environment variable is "NAMETRANS", return
+ * a pointer to the list of appendices.
+ * You can set the first environment variable using
+ * 'env - NAMETRANS=... "`env`" command ...'
+ */
+extern char * env_transl(void);
+
+/* if name has the correct suffix "#keyword=correct_context#",
+ * return position of the suffix, else 0.
+ */
+extern char* testname(int restricted, char* name);
+
+/* for use in kernel/sysctrl.h */
+extern int nametrans_dostring(ctl_table * table, int write, struct file * filp,
+			      void * buffer, size_t * lenp);
+extern int nametrans_string(ctl_table * table, int * name, int nlen,
+			    void * oldval, size_t * oldlenp,
+			    void * newval, size_t newlen, void ** context);
+
+
+#endif